Postal Scam

Just got this email round at work, does anyone know anything more about it?
BMB
xx

> If you receive a card through your door from a company call PDS (Parcel
> Delivery Service) saying that they have a parcel awaiting delivery
> instructions and can you contact them on 0906 6611911
>
> DO NOT call the number as this is a mail scam originating from Belize
>
> If you call the number and you start to hear a recorded message you will
> already have been billed £15 for the phone call.
>
> If you do receive a card with these details, then please contact
> Royal Mail Fraud on 02072396655
> or ICTIS at <http://www.icstis.org.uk>
> or your local trading standards office.